<!DOCTYPE html>
<html>

<head>
    <meta charset="UTF-8" />
    <title>数据绑定</title>
    <!-- 引入Vue -->
    <script type="text/javascript" src="../js/vue.js"></script>
</head>

<body>

    <div id="root">
        <!-- 遍历数组 -->
        <h2>人员列表</h2>
        <input type="text" placeholder="请输入名字" v-model="keywords">
        <ul>
            <li v-for="(p,index) in filPersons" :key="index">
                {{p.name}}-{{p.age}}--{{p.sex}}
            </li>
        </ul>

    </div>
</body>

<script type="text/javascript">
    Vue.config.productionTip = false //阻止 vue 在启动时生成生产提示。

   /*  //用watch实现
    new Vue({
        el: '#root',
        data: {
            keywords: '',
            persons: [
                { id: '001', name: '马冬梅', age: 18, sex: '女' },
                { id: '002', name: '周冬雨', age: 19, sex: '女' },
                { id: '003', name: '周杰伦', age: 20, sex: '男' },
                { id: '004', name: '温兆伦', age: 21, sex: '男' },
            ],
            filPersons: [],
        },

        watch: {
            keywords: {
                immediate: true,
                handler(val) {
                    console.log("keywords被修改了", val)
                    this.filPersons = this.persons.filter((p) => {
                        return p.name.indexOf(val) !== -1
                    })
                }
            }

        }
    }) */

    //用computed实现
    new Vue({
        el: '#root',
        data: {
            keywords: '',
            persons: [
                { id: '001', name: '马冬梅', age: 18, sex: '女' },
                { id: '002', name: '周冬雨', age: 19, sex: '女' },
                { id: '003', name: '周杰伦', age: 20, sex: '男' },
                { id: '004', name: '温兆伦', age: 21, sex: '男' },
            ],
        },
        computed:{
            filPersons(){
                return this.persons.filter((p) => {
                        return p.name.indexOf(this.keywords) !== -1
                    })
            }
        }

       
    })
</script>

</html>